Tomas families are Croats and they are mostly from Herzegovina. In the past century, relatively most of Croatian residents bearing this family name were born in Herzegovina (Grude area) and in Bosanian Posavina (Derventa area).
Prevalence
About 1300 people with faimily name Tomas live in Croatia today, in 570 households. There were 380 of them in the middle of the past century, and their number more than tripled. They are located in almost all Croatian counties, in 64 cities and 125 other places, mostly in Zagreb (305), Osijek (95), Slavonski Brod (90), Split (85), and in Cepin in Osijek area (45).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over fifty times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.